<!doctype html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style type="text/css">
		*{
			margin: 0px;
			padding: 0px;
		}
		.in{
			width: 200px;
			height: 48px;
			border: 1px solid red;
			float: left;
		}
		.btn{
			width: 50px;
			height: 50px;
			border: 1px solid red;
			float: left;
		}

	</style>
</head>
<body>
	<input class="in" type="text">
	<input class="btn" type="submit">
</body>
</html>